The amount of data on 5.25" disks which is also in standard PC formats means that a standard USB-mass-storage implementation would have limited use. There are

The amount of data on 5.25" disks which is also in standard PC formats means that a standard USB-mass-storage implementation would have limited use. There are plenty of archival-quality solutions which perform low-level flux imaging of the media, and these do operate over USB. Because the 5.25" media saw application in tons of non-PC applications, and this is the kind of controller you need to do useful work with them. More info here: https://archiveteam.org/index.php?title=Rescuing_Floppy_Disks https://archiveteam.org/index.php?title=Rescuing_Floppy_Disk...